Finding the Third Proportional to 73,700 and 173,239.50

Step by Step Solution

1. Step 1: Write the proportion equation
   73,700 : 173,239.50 = 173,239.50 : x
2. Step 2: Convert to fraction form
   73,700/173,239.50 = 173,239.50/x
3. Step 3: Cross multiply
   73,700x = 173,239.50 × 173,239.50
4. Step 4: Simplify right side
   73,700x = 30,011,924,360.25
5. Step 5: Solve for x
   x = 30,011,924,360.25/73,700
6. Step 6: Final answer
   x = 407,217.43